Sterilizer.



W. A. WILEY & J E. & G. F. HALL.

.STERILIZER.

APPLIOATION FILED MAR. 20, 1906.

Patented Apr. 13, 1909.

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f To all whom may concern:

bottom of the same.

UNITED STATES PATEN airmen.

7 WILLIAM A. WILEY, J EVERETT HALL, AND GEORGE F. HALL, OF ERIE,PENNSYLVANIA, ASSIGNORS TO AMERICAN STERILIZER COMPANY, OF ERIE,PENNSYLVANIA, A GORPO- RATION OF PENNSYLVANIA.

STEBILIZER.

ifo. 918,409.

Be it known that we, WILLIAM A. WILEY,

J EVERETT'HALL, and GEORGE F. I-IALL,

citizens of the United States, residing at cEI'lG, in the county of Erieand State of Pennsylvania, have invented new and use- .ful Im rovementsin Sterilizers, of which the following is a specification.

This invention relates to sterilizers and consists in certainimprovements in the con- .that are designed to be used during theprogress of a surgical operation, it is desirable to have them soarranged that they may be opened and articles taken from them orintroduced to them, without its being necessary for the operator totouch any part of the exterior of the sterilizer. This forms one of theobjects of our invention.

The other objects will appear from the specification and claims.

The invention is illustrated in the accompanying drawings as follows.

Figure 1 shows a section on the line 11 in Fig. 2. Fig. 2a section onthe line 22 in Fig. 1. Fig. 3 a plan view of the valve mechanism. Fig. 4a side elevation of the mounting of the cover. Fig. 5 a section on theline 5-5 in Fig. 4. Fig. 6 a section of the valve mechanism. Fig. 7 anenlarged section of the edge of the cover.

A marks the sterilizer chamber which may be of any convenientconstruction. It is provided with the heating coil a in the usualmanner. A tray B is arranged in the chamber and is usually sus endedabove the bottom so that it is out oi contact with any sterilizingliquid that may be arranged in the bottom. The bails I) extend from thebracket and are mounted on the hooks c. The hooks c are suspended fromthe cover 0 and are ivotally mounted at c on the hanger 0 he han er issecured to the cover 0. The cover 0 1s designed to completely close thechamber and when in place on top of the chamber, the tray is heldslightly above the At each side of the cover there is a bracket 0 havinga rounded end 0 This rounded end is placed in the sockets e arranged inthe heads 6 on the ends of the piston rods o The piston rods ex-Specification of Letters Patent.

Application filed March 20, 1906.

' Patented April 13, 1909.

Serial No. 807,114.

tend into the cylinders E through the glands E and extend from thepistons E. The pistons are arranged to operate in the cylinders E. Atthe base of the cylinders are the elbows e in which there are contractedopenings e. The ipes connect the cylinder with the supp y pipe E andexhaust pipe E. The supply is controlled by the valve 6 and the exhaustby valve 0". The supply valve has the chamber 0 connected with the pipeE This chamber is connected with the pipe chamber E by a passage e Avalve disk e closes this passage. A stem 6 extends from the valve toapedal a. The pedal is mounted on a standard 0 Upon depressing the endof the pedal with the foot, the stem is raised, carrying with it thevalve and so opening the connection to the supply pipe E. The exhaustpipe E is connected with the chamber 6 and this chamber is connected bya passage 0 with the pipe chamber E. The disk 6 controls the passage. Astem 6 extends from the disk to the pedal e". Upon depressing the pedalwith the foot, the disk 6 is raised, thus permitting the exhaust of theliquid from the cylinder.

In the operation of the device, starting with the cover in a closedposition, the pedal 6 is depressed, opening the supply valve. The liquidpassing through the minute openings e enters the cylinders E at auniform speed, thus moving the pistons E in unison. With the upwardmovement of the pistons the cover C is raised and with it the tray B.WVe prefer that the pivot c and the axis of the rounded end c be inalinement so that the cover is free to swing pivotally. WVe prefer toprovide the cover with a wei ht a so that as it is lifted, it willassume a slanting position with the front edge uppermost.

Ive prefer to connect the upper ends of the cylinders by means of a pipeE with the exhaust pipe E so as to permit the escape of any leakage pastpistons. It will be noted that the tray may be readily removed byremoving the bails from the hooks c and ii desired the cover may belifted out of the sock ets e and removed.

WVe prefer to provide the cover with the packing C. This engages theedges of the Walls of the chamber, and in as much as the cover isweighted with the tray B, the steam or other sterilizing fluid ismaintained at slightly above atmospheric pressure, thus making possiblea higher temperature than would otherwise be possible. This packing isarranged in a clip 0 the clip being secured to the under part of thecover and having the edges 0 next the shoulder of the cover, and anunder cut lip c at opposite sides of the strip. T he packing C is sprunginto this clip and retained by it.

IV hat We claim as new is:

1. In a sterilizer the combination of a sterilizing chamber; a covertherefor; a fluid pressure actuated means for lifting the cover; and apedal actuated valve for controlling the actuating fluid.

2. In a sterilizer the combination of a sterilizing chamber; a trayarranged in the chamber; a fluid pressure actuated means for lifting thetray; and a pedal actuated valve controlling the actuating fluidpressure.

3. In a sterilizer the combination of a sterilizing chamber a covertherefor; a tray suspended in the chamber; a fluid pressure actuatedmeans for lifting the tray and cover; and a pedal actuated valve forcontrolling the actuating fluid.

4. In a sterilizer the combination of a sterilizing chamber; a covertherefor; cylinders arranged each side of the chamber; pistons in saidcylinders; means for communicating the action of the pistons to thecover for lifting the same; and means for controlling the actuatingfluid.

5. In a sterilizer, the combination of a sterilizing chamber; a traytherefor; cylinders arranged each side of the chamber; pistons in saidcylinders; means for communicating the action of the pistons to thetrayfor lifting the same; and means for controlling the actuating fluid.

6. In a sterilizer the combination of a sterilizing chamber; a traytherefor; cylinders arranged each side of the chamber; pistons in saidcylinders; means for communicating the action of the pistons to the trayfor lifting the same; and a pedal actuated valve for controlling theactuating fluid.

7. In a sterilizer the combination of a sterilizing chamber; a covertherefor; a fluid pressure actuated means for lifting the cover, saidmeans being arranged to lift the cover bodily from the chamber.

8. In a sterilizer the combination of a sterilizing chamber; a covertherefor; a fluid pressure actuated means for lifting the cover; apivoted connection arranged between said means and the cover, saidconnection being approximately at the central points of opposite edgesof the cover.

9. In a sterilizer the combination of a sterilizing chamber; a covertherefor; a tray suspended from the cover; and a fluid Pressure actuatedmeans for lifting the cover.

10. In a sterilizer the combination of a sterilizing chamber; a covertherefor; a fluid pressure actuated means for lifting the cover; apivotal connection between said means and the cover; and a pivotalconnection between the tray and the cover, the axes of said connectionsbeing in alinement.

11. In a sterilizer the combination of a sterilizing chamber; a covertherefor; a fluid pressure actuated means for lifting the cover; apivotal connection between said means and the cover; and a pivotalconnection between the tray and the cover, the axes of said connectionsbeing in alinement, and said cover being weighted to tilt as it israised.

12. In a sterilizer the combination of a sterilizing chamber; a covertherefor; a fluid pressure actuated means for lifting the cover; apivotal connection between the cover and said means, said cover beingweighted to tilt as it is lifted by said means.

13. In a sterilizer the combination of a sterilizing chamber; a cylinderat each side of the chamber; pistons in said cylinders; lifting devi esin the chamber actuated by the pistons, means for conveying fluid insaid cylinders, said means comprising a contracted opening, for thepurpose described.

14. In a sterilizer the combination of a sterilizing chamber; liftingdevices in said chamber; fluid actuated means for actuating saiddevices; a pedal actuated valve for controlling the inflow of the fluidto said means; and a pedal actuated valve for controlling the exhaust ofthe fluid from said means.

15. In a sterilizer the combination of a sterilizing chamber; liftingdevices in said chamber; fluid actuated means for actuating saiddevices; a pedal actuated valve for controlling the inflow of fluid tosaid means; and a pedal actuated valve for controlling the exhaustof'fluid from said means; the valves controlling the supplyand exhaustof fluid comprising the chamber 6 the supply passage E, with the passagea connecting the same, the disk e, the stem 6 extending from the diskand the pedal 6 for operating the stem, the exhaust chamber e havingwith a passage a connecting it with the pipe chamber E disk 6controlling the passage, stem 6 and pedal 6 for actuating the same.

16. In a steril'zer the combination of a sterilizing chamber; a covertherefor; fluid pressure actuated means for lifting the cover; and aconnection between the cover and said means, the said connection beingarranged to permit the removal of the cover.

17. In a sterilizer the combination of a sterilizing chamber; a trayarranged therein; fluid pressure actuated means for lifting said tray;and a connection between the fluid actuated means and the tray, saidconnection being arranged to permit the removal of the tray. 7 V

18. In a sterilizer the combination of a ently of said fluid pressureactuated lifting means.

In testimony whereof, we have hereunto set our hands in the presence oftwo sub- 1-5 scribing witnesses.

WILLIAM A. WILEY.

J EVERETT HALL.

GEORGE F. HALL. Witnesses:

H. R. LORD, BESSIE F. PARKER.

